Neutron-scattering study of spin correlations in La1.94 - x Srx Ce0.06 CuO4

M. Enoki, M. Fujita, K. Yamada

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1 Citation (Scopus)


We performed a neutron-scattering experiment to investigate the effect of distortion of CuO2 planes on the low-energy spin correlation of La1.94 - x Srx Ce0.06 CuO4 (LSCCO). Due to the carrier-compensation effect by co-doping of Sr and Ce, LSCCO has a smaller orthorhombic lattice distortion compared to La2 - x Srx CuO4 (LSCO) with comparable hole concentration p. A clear gap with the edge-energy of 6-7 meV was observed in the energy spectrum of local dynamical susceptibility χ (ω) for both x = 0.18 (p ∼ 0.14) and x = 0.24 (p ∼ 0.20) samples as observed for optimally doped LSCO (x = 0.15 - 0.18). For the x = 0.14 (p ∼ 0.10) sample, in addition to the gap-like structure in χ (ω) we observed a low-energy component within the gap which develops below 2 - 3 meV with decreasing the energy. The low-energy component possibly coincides with the static magnetic correlation observed in this sample. These results are discussed from a view point of relationship between the stability of low-energy spin fluctuations and the distortion of CuO2 planes.

Original languageEnglish
Pages (from-to)3129-3131
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Issue number12
Publication statusPublished - 2008 Dec


  • C. Neutron-scattering

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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